:root {
  --bg: #0f1117;
  --surface: #181b24;
  --surface-2: #1f2330;
  --border: #2a2f3d;
  --text: #e6e8ee;
  --muted: #9aa3b2;
  --accent: #f0a23a;
  --accent-hover: #ffb44f;
  --radius: 12px;
  --maxw: 1080px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.5rem;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(15, 17, 23, 0.85);
  position: sticky;
  top: 0;
  backdrop-filter: blur(8px);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  letter-spacing: -0.01em;
}
.nav-links { display: flex; align-items: center; gap: 1.25rem; }
.nav-links a { color: var(--muted); font-size: 0.95rem; }
.nav-links a:hover { color: var(--text); }

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.btn-primary {
  background: var(--accent);
  color: #1a1206;
}
.btn-primary:hover { background: var(--accent-hover); color: #1a1206; }
.btn-ghost {
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--text); }

/* Hero */
.hero {
  padding: 6rem 0 4rem;
  text-align: center;
  background:
    radial-gradient(900px 400px at 50% -10%, rgba(240, 162, 58, 0.14), transparent 70%);
}
.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.1;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}
.hero-lead {
  max-width: 640px;
  margin: 0 auto 2rem;
  font-size: 1.15rem;
  color: var(--muted);
}
.hero-cta { display: flex; gap: 0.85rem; justify-content: center; flex-wrap: wrap; }

/* Sections */
.section-title {
  font-size: 1.6rem;
  text-align: center;
  margin: 0 0 2.5rem;
  letter-spacing: -0.01em;
}
.section-lead {
  max-width: 600px;
  margin: -1.75rem auto 2.5rem;
  text-align: center;
  color: var(--muted);
}
.features, .pricing { padding: 4rem 0; }
.features { border-top: 1px solid var(--border); }

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}
.feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.feature h3 { margin: 0 0 0.5rem; font-size: 1.1rem; }
.feature p { margin: 0; color: var(--muted); font-size: 0.97rem; }

/* Pricing */
.pricing { border-top: 1px solid var(--border); background: var(--surface); }
.tier-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  max-width: 720px;
  margin: 0 auto;
}
.tier {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  text-align: center;
}
.tier-paid { border-color: var(--accent); }
.tier h3 { margin: 0 0 0.25rem; font-size: 1.25rem; }
.tier-price { font-size: 1.5rem; font-weight: 700; margin: 0 0 1.25rem; }
.tier-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  text-align: left;
  color: var(--muted);
}
.tier-list li { padding: 0.35rem 0; border-bottom: 1px solid var(--border); }
.tier-list li:last-child { border-bottom: none; }
.pricing-note { text-align: center; color: var(--muted); margin: 2rem 0 0; font-size: 0.95rem; }

/* Centered panel (login placeholder) */
.centered-panel { padding: 6rem 0; }
.panel {
  max-width: 460px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  text-align: center;
}
.panel h1 { font-size: 1.6rem; margin: 0 0 0.75rem; }
.panel p { color: var(--muted); margin: 0 0 1.75rem; }
.panel .btn { margin: 0 0.3rem; }

/* Auth form */
.auth-form { text-align: left; }
.auth-form label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 0.4rem;
}
.auth-form input[type="email"],
.auth-form input[type="text"] {
  width: 100%;
  padding: 0.7rem 0.85rem;
  margin: 0 0 1.25rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 1rem;
}
.auth-form input:focus { outline: none; border-color: var(--accent); }
.auth-form .btn { width: 100%; margin: 0; }
.form-error {
  background: rgba(220, 80, 80, 0.12);
  border: 1px solid rgba(220, 80, 80, 0.4);
  color: #f3b4b4;
  border-radius: var(--radius);
  padding: 0.7rem 0.85rem;
  margin: 0 0 1.25rem;
  font-size: 0.9rem;
}
.account-meta { list-style: none; padding: 0; margin: 0 0 1.75rem; }
.account-meta li { padding: 0.5rem 0; border-bottom: 1px solid var(--border); }
.account-meta li:last-child { border-bottom: none; }
.account-meta .label { color: var(--muted); margin-right: 0.5rem; }
.api-key-reveal {
  background: rgba(120, 200, 120, 0.10);
  border: 1px solid rgba(120, 200, 120, 0.4);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  margin: 0 0 1.25rem;
}
.api-key-value {
  display: block;
  word-break: break-all;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.6rem 0.75rem;
  margin: 0.5rem 0;
  font-size: 0.95rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }
.footer-links { display: flex; gap: 1.25rem; }
.footer-links a { color: var(--muted); }
.footer-links a:hover { color: var(--text); }